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a08a6776f5
The current code uses one restore interface to handle the work for all restore roles, i.e., master, loader and applier. This makes it harder to review or maintain or scale. This commit split the restore into multiple roles by mimicing FDB transaction system: 1) It uses a RestoreWorker as the process to host restore roles; This commit assumes one restore role per RestoreWorker; but it should be easy to extend to support multiple roles per RestoreWorker; 2) It creates 3 restore roles: RestoreMaster: Coordinate the restore process and send commands to the other two roles; RestoreLoader: Parse backup files to mutations and send mutations to appliers; RestoreApplier: Sort received mutations and apply them to DB in order. Compilable version. To be tested in correctness.
71 lines
1.8 KiB
C++
71 lines
1.8 KiB
C++
/*
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* RestoreUtil.cpp
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*
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* This source file is part of the FoundationDB open source project
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*
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* Copyright 2013-2018 Apple Inc. and the FoundationDB project authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "fdbserver/RestoreUtil.h"
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#include "flow/actorcompiler.h" // This must be the last #include.
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std::vector<std::string> RestoreRoleStr = {"Invalid", "Master", "Loader", "Applier"};
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int numRoles = RestoreRoleStr.size();
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std::string getRoleStr(RestoreRole role) {
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if ( (int) role >= numRoles || (int) role < 0) {
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printf("[ERROR] role:%d is out of scope\n", (int) role);
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return "[Unset]";
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}
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return RestoreRoleStr[(int)role];
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}
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// CMDUID implementation
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void CMDUID::initPhase(RestoreCommandEnum newPhase) {
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printf("CMDID, current phase:%d, new phase:%d\n", phase, newPhase);
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phase = (uint16_t) newPhase;
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cmdID = 0;
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}
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void CMDUID::nextPhase() {
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phase++;
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cmdID = 0;
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}
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void CMDUID::nextCmd() {
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cmdID++;
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}
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RestoreCommandEnum CMDUID::getPhase() {
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return (RestoreCommandEnum) phase;
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}
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void CMDUID::setPhase(RestoreCommandEnum newPhase) {
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phase = (uint16_t) newPhase;
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}
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void CMDUID::setBatch(int newBatchIndex) {
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batch = newBatchIndex;
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}
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uint64_t CMDUID::getIndex() {
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return cmdID;
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}
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std::string CMDUID::toString() const {
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return format("%04ld|%04ld|%016lld", batch, phase, cmdID);
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}
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